It is a substantial part of how Kristen, whose last name I'm withholding out of concern for her privacy, has become, according to one leading compilation, the No. 4 ranking woman, worldwide, in Gamerscore. Her tag is CRU x360a - go ahead, look it up. Kristen - CRU or Crubie to some online - is a 24-year-old stay-at-home mom in northwest Indiana. You call her extremely motivated. You can call her obsessed. You can also call her an achievement whore, like she hasn't heard that from every piss-ant with a 5,000 gamerscore in the underground zone.